In the professional audio-visual field, from broadcast live streaming, film and television production to on-site directing of large-scale events, the stable transmission of high-definition signals has always been a core demand. Especially with the popularization of 4K/2K resolution content, traditional copper cable transmission is limited by distance and signal attenuation, making it difficult to meet long-distance deployment needs. However, the 12G SDI Fiber Extender (LK2-12G) launched by SPROLINK, with its fully compatible signal specifications, flexible transmission distance and professional-level adaptive design, has become an ideal solution to solve the pain points of long-distance transmission of high-definition signals.
I. Full-Spec Compatibility: From SD to 12G SDI, Covering All Professional HD Scenarios
In professional audio-visual scenarios, equipment signal specifications are often diverse—there are not only traditional SD (Standard Definition) and HD (High Definition) signals, but also high-definition formats such as 3G SDI (2K) and 12G SDI (4K). This SDI fiber extender adopts an adaptive signal input design, which can automatically identify and adapt to 12G/6G/3G/HD/SD SDI signals without manual mode switching, perfectly compatible with professional equipment of different generations 1.
It supports a maximum resolution of 2160P60Hz (4K@60fps) and is backward compatible with mainstream resolutions such as 1080P, 720P, and 576i 2. Whether it is 4K main signal transmission in broadcast live streaming or 2K monitoring signal distribution in film and television studios, it can handle it easily. In addition, the device strictly complies with industry standards such as SDI 12G, SDI 3G, SDI HD, and SDI SD, ensuring seamless connection with professional equipment such as cameras, switchers, monitors, and projectors, and avoiding signal interruption or picture quality loss caused by compatibility issues 7.
II. Flexible Transmission Distance: 10KM as Standard, 20/40/80KM Optional to Adapt to Different Scenario Needs
The core advantage of fiber transmission lies in "long distance + low loss", and this extender offers high flexibility in transmission distance:
- 10KM transmission as standard: It adopts a detachable SFP module (LC optical port) and is matched with single-mode/multi-mode optical fiber, which can easily realize 4K signal transmission without attenuation within 10 kilometers, meeting the signal interconnection needs of most small and medium-sized venues and between buildings (such as shopping mall large screen linkage, park monitoring center signal convergence) 3.
- Optional 20/40/80KM long-distance modules: For scenarios such as large outdoor events, cross-city broadcast signal backhaul, and long-distance monitoring in mining areas/scenic spots, high-power SFP modules can be replaced to extend the transmission distance to 20 kilometers, 40 kilometers or even 80 kilometers 4. Throughout the process, the signal remains stable without delay or noise, and the picture quality is the same as that of short-distance transmission.
Compared with traditional copper cables (12G SDI signal copper cable transmission only supports 80 meters), fiber transmission not only breaks through the distance limit but also effectively avoids electromagnetic interference (EMI). It still maintains signal purity in complex scenarios such as industrial environments and high-voltage areas.
III. Professional-Level Design: V-Port Battery Power Supply + Dual Output, Adapting to Mobile and Fixed Scenarios
Professional scenarios often have strict requirements on the "practicality" and "reliability" of equipment. This SDI fiber extender fully meets professional needs in terms of detailed design:
1. Flexible Power Supply: Dual Options of DC5V and V-Port Battery
- For fixed deployment, it can be powered through the DC5V/2A power interface to meet the needs of long-term stable operation 8;
- In mobile scenarios (such as outdoor live streaming and on-location shooting), it supports external V-port battery box (optional accessory), freeing from the limitation of power sockets 5. The device can be flexibly deployed with cameras and monitoring systems, and the battery life can be adjusted according to the battery capacity to ensure no interruption during shooting or live streaming.
2. Practical Interfaces: Taking into Account Signal Input, Loop-Out and Output
- Transmitter (TX): Equipped with 1 SDI IN (signal input, connected to signal sources such as cameras and switchers) and 1 SDI LOOP (loop-out, which can be connected to a local monitor to realize the dual functions of "signal transmission + local monitoring") 8;
- Receiver (RX): Designed with 2 SDI OUT (signal output), which can be connected to two monitors or display devices at the same time to meet the needs of multi-camera monitoring and signal distribution without additional distributors, simplifying system construction 9.
In addition, the device supports hot swapping, so there is no need to power off when installing or replacing modules, avoiding signal interruption caused by device restart and further improving system reliability 6.
IV. Hardcore Parameters: Ensuring Stable Performance in Professional Scenarios
In addition to core functions, the hardware parameters of this SDI fiber extender also meet professional-level standards to protect signal transmission:
- Signal performance: The data transmission rate covers 270Mbit/s (SD) to 12Gbit/s (12G SDI), the signal amplitude is stably maintained at 800mV±10%, and the jitter is controlled at <0.2UI, ensuring no distortion or trailing of 4K signal transmission 10;
- Environmental adaptability: The working temperature range is -25℃~55℃, and the humidity is 20%~90%. It can operate stably whether in cold outdoor events or humid studio environments 11;
- Portability and durability: The device itself is only 115mm×75mm×25mm (about the size of a palm) and weighs 1.0kg, which is easy to carry. The transportation package size is 310mm×220mm×55mm, which has strong protection and is suitable for frequent mobile deployment 11.
V. Application Scenarios: Where HD Long-Distance Transmission Is Needed, It Is There
With its comprehensive functions and reliable performance, this 12G SDI fiber extender has been widely adapted to multiple professional fields:
- Broadcasting and live streaming: 4K signal backhaul between TV studio and transmitter tower, multi-camera signal transmission for outdoor sports events;
- Film and television production: Long-distance connection between camera signals and post-production monitoring systems during on-location shooting to ensure directors can control picture quality in real time;
- Large-scale events: On-site directing systems for concerts and exhibitions to realize signal interconnection between stage cameras and control rooms;
- Security monitoring: 4K surveillance camera signals in large parks and mining areas are transmitted to the monitoring center over long distances for real-time monitoring without delay.
VI. Why Choose SPROLINK 12G SDI Fiber Extender?
Among many similar products, the core advantages of SPROLINK LK2-12G lie in "professional adaptation" and "stable reliability":
- As a brand focusing on audio-visual transmission technology, SPROLINK always adheres to the concept of "CREATIVE VIDEO REVOLUTION", and its products strictly comply with industry standards and have been verified through multi-scenario actual tests 12;
- From the detachable SFP module to the V-port battery power supply, every design is centered on the actual needs of professional users, avoiding "functional redundancy" and "design disconnection";
- Comprehensive technical support and after-sales service are provided. Whether it is product selection, system construction, or later maintenance, professional team support can be obtained (contact email: sales@sprolink.com; phone: 0592-5565698) 1314.
For professional users pursuing stable transmission of high-definition signals, the SPROLINK 12G SDI Fiber Extender is not only a "transmission device" but also a reliable partner to improve work efficiency and ensure project quality. Whether you need regular deployment within 10 kilometers or ultra-long-distance transmission of 80 kilometers, it can help your professional audio-visual projects be successfully implemented with its fully compatible and highly stable performance.
To learn more about product details, you can visit the official website: www.sprolink.com or contact the sales team to obtain a customized transmission solution 15.
